| 摘要: |
| 为实现移动终端对临近空间物理链路资源的有效共享，提出将基于竞争机制的载波
侦听型多址接入协议（CSMA）应用到临近空间通信网中，并采用理论推导和OPNET建模仿真
的方法对其吞吐量和时延性能进行了分析。仿真结果表明，在常规的用户数量下，CSMA协议
能够保证较大的吞吐量和较低的端到端时延，可以很好地应用于临近空间通信网。 |
| 关键词: 临近空间通信网 载波侦听多址接入协议 吞吐量 端到端时延 OPNET仿真 |
| DOI：10.3969/j.issn.1001-893X. |
|
| 基金项目:陕西省自然科学基金资助项目（2007F03）；陕西省电子信息系统综合集成重点实验室基金资助项目（200902B） |
|
| Simulation of a Novel Multiple Access Protocol for Competition in Near Space Communication Network |
| TONG Ya-guang,LIANG Jun,ZHU Zi-hang |
| (The Telecommunication Engineering Institute, Air Force Engineering University,
Xi′an 710077,China) |
| Abstract: |
| To meet the need of mobile terminals sharing network channel resource
effectively, CSMA (Carrier Sense Multiple Access) protocol based on competitive
mechanism is applied to near space communication network. Its through
put and end to end (ETE) delay are analysed based on theoretical deduction and
OPNET simulation. Simulation results show that in the case of norm
al user numbers, CSMA can ensure higher throughput and lower ETE delay. Thus, CS
MA can be applied effectively to near space communication network. |
| Key words: near space communication network CSMA protocol throughput end to end delay OPNET simulation |
